The Britain's consumer prices index (CPI) rose to 1.8 percent in April, up from the five-year-low of 1.6 percent in March, said Office for National Statistics (ONS) Tuesday. The largest contribution to the increase in the rate come from transport costs, principally air fares, sea fares and motor fuels. An overall fall in the price of food was the largest offsetting factor, said the ONS. CPIH, an inflation gauge include consumer prices and owner occupier's housing costs, increased 1.6 percent in the 12-month to April 2014, up from 1.5 percent a month previous, data also showed.